From patchwork Tue Apr 19 07:20:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuji Ishikawa X-Patchwork-Id: 12819206 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8E0D5C433FE for ; Tue, 19 Apr 2022 16:58:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6F3CF10E850; Tue, 19 Apr 2022 16:58:46 +0000 (UTC) X-Greylist: delayed 1517 seconds by postgrey-1.36 at gabe; Tue, 19 Apr 2022 07:51:03 UTC Received: from mo-csw-fb.securemx.jp (mo-csw-fb1114.securemx.jp [210.130.202.173]) by gabe.freedesktop.org (Postfix) with ESMTPS id 23B7C10E799 for ; Tue, 19 Apr 2022 07:51:02 +0000 (UTC) Received: by mo-csw-fb.securemx.jp (mx-mo-csw-fb1114) id 23J7PlZC004605; Tue, 19 Apr 2022 16:25:47 +0900 Received: by mo-csw.securemx.jp (mx-mo-csw1114) id 23J7PbOR006305; Tue, 19 Apr 2022 16:25:38 +0900 X-Iguazu-Qid: 2wHHDhtSAIJBWfaaBU X-Iguazu-QSIG: v=2; s=0; t=1650353137; q=2wHHDhtSAIJBWfaaBU; m=OFwMfOYRcKo5PNPvIzkxm83h1KkArTfngCqo8Q8G3YE= Received: from imx2-a.toshiba.co.jp (imx2-a.toshiba.co.jp [106.186.93.35]) by relay.securemx.jp (mx-mr1112) id 23J7PaPb002532 (version=TLSv1.2 cipher=AES128-GCM-SHA256 bits=128 verify=NOT); Tue, 19 Apr 2022 16:25:36 +0900 X-SA-MID: 36308329 From: Yuji Ishikawa To: Nobuhiro Iwamatsu , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= Subject: [PATCH 2/4] soc: visconti: Add Toshiba Visconti image processing accelerator common source Date: Tue, 19 Apr 2022 16:20:16 +0900 X-TSB-HOP2: ON Message-Id: <20220419072018.30057-3-yuji2.ishikawa@toshiba.co.jp> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220419072018.30057-1-yuji2.ishikawa@toshiba.co.jp> References: <20220419072018.30057-1-yuji2.ishikawa@toshiba.co.jp> X-Mailman-Approved-At: Tue, 19 Apr 2022 16:58:45 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, yuji2.ishikawa@toshiba.co.jp, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Adds common operations for image processing accelerator drivers including dma-buf control and ioctl definitiion Signed-off-by: Yuji Ishikawa Reviewed-by: Nobuhiro Iwamatsu --- drivers/soc/Kconfig | 1 + drivers/soc/Makefile | 1 + drivers/soc/visconti/Kconfig | 1 + drivers/soc/visconti/Makefile | 6 +++ drivers/soc/visconti/ipa_common.c | 55 +++++++++++++++++++ drivers/soc/visconti/ipa_common.h | 19 +++++++ drivers/soc/visconti/uapi/ipa.h | 87 +++++++++++++++++++++++++++++++ 7 files changed, 170 insertions(+) create mode 100644 drivers/soc/visconti/Kconfig create mode 100644 drivers/soc/visconti/Makefile create mode 100644 drivers/soc/visconti/ipa_common.c create mode 100644 drivers/soc/visconti/ipa_common.h create mode 100644 drivers/soc/visconti/uapi/ipa.h diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig index e8a30c4c5..c99139aa8 100644 --- a/drivers/soc/Kconfig +++ b/drivers/soc/Kconfig @@ -22,6 +22,7 @@ source "drivers/soc/tegra/Kconfig" source "drivers/soc/ti/Kconfig" source "drivers/soc/ux500/Kconfig" source "drivers/soc/versatile/Kconfig" +source "drivers/soc/visconti/Kconfig" source "drivers/soc/xilinx/Kconfig" endmenu diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile index a05e9fbcd..455b993c2 100644 --- a/drivers/soc/Makefile +++ b/drivers/soc/Makefile @@ -28,4 +28,5 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/ obj-y += ti/ obj-$(CONFIG_ARCH_U8500) += ux500/ obj-$(CONFIG_PLAT_VERSATILE) += versatile/ +obj-$(CONFIG_ARCH_VISCONTI) += visconti/ obj-y += xilinx/ diff --git a/drivers/soc/visconti/Kconfig b/drivers/soc/visconti/Kconfig new file mode 100644 index 000000000..8b1378917 --- /dev/null +++ b/drivers/soc/visconti/Kconfig @@ -0,0 +1 @@ + diff --git a/drivers/soc/visconti/Makefile b/drivers/soc/visconti/Makefile new file mode 100644 index 000000000..8d710da08 --- /dev/null +++ b/drivers/soc/visconti/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the Visconti specific device drivers. +# + +obj-y += ipa_common.o diff --git a/drivers/soc/visconti/ipa_common.c b/drivers/soc/visconti/ipa_common.c new file mode 100644 index 000000000..6345f33c5 --- /dev/null +++ b/drivers/soc/visconti/ipa_common.c @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause +/* Toshiba Visconti Image Processing Accelerator Support + * + * (C) Copyright 2022 TOSHIBA CORPORATION + * (C) Copyright 2022 Toshiba Electronic Devices & Storage Corporation + */ + +#include "ipa_common.h" + +int ipa_attach_dmabuf(struct device *dev, int fd, struct dma_buf_attachment **a, + struct sg_table **s, dma_addr_t *addr, enum dma_data_direction dma_dir) +{ + struct dma_buf_attachment *attachment; + struct dma_buf *dmabuf; + struct sg_table *sgt; + int ret; + + dmabuf = dma_buf_get(fd); + if (IS_ERR(dmabuf)) { + dev_err(dev, "Invalid dmabuf FD\n"); + return PTR_ERR(dmabuf); + } + attachment = dma_buf_attach(dmabuf, dev); + + if (IS_ERR(attachment)) { + dev_err(dev, "Failed to attach dmabuf\n"); + ret = PTR_ERR(attachment); + goto err_put; + } + sgt = dma_buf_map_attachment(attachment, dma_dir); + if (IS_ERR(sgt)) { + dev_err(dev, "Failed to get dmabufs sg_table\n"); + ret = PTR_ERR(sgt); + goto err_detach; + } + if (sgt->nents != 1) { + dev_err(dev, "Sparse DMA region is unsupported\n"); + ret = -EINVAL; + goto err_unmap; + } + + *addr = sg_dma_address(sgt->sgl); + *a = attachment; + *s = sgt; + + return 0; + +err_unmap: + dma_buf_unmap_attachment(attachment, sgt, dma_dir); +err_detach: + dma_buf_detach(dmabuf, attachment); +err_put: + dma_buf_put(dmabuf); + return ret; +} diff --git a/drivers/soc/visconti/ipa_common.h b/drivers/soc/visconti/ipa_common.h new file mode 100644 index 000000000..2c3b64837 --- /dev/null +++ b/drivers/soc/visconti/ipa_common.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ +/* Toshiba Visconti Image Processing Accelerator Support + * + * (C) Copyright 2022 TOSHIBA CORPORATION + * (C) Copyright 2022 Toshiba Electronic Devices & Storage Corporation + */ + +#include +#include + +#define COHERENT_ADDRESS_BIT (0x400000000ULL) +#define IPA_POLL_EVENT_NONE (0) +#define IPA_POLL_EVENT_DONE (1) +#define IPA_POLL_EVENT_ERROR (2) +#define IPA_WAKEUP_RETRY_DELAY (300 * 1000) /*usec*/ + +extern int ipa_attach_dmabuf(struct device *dev, int fd, struct dma_buf_attachment **a, + struct sg_table **s, dma_addr_t *addr, + enum dma_data_direction dma_dir); diff --git a/drivers/soc/visconti/uapi/ipa.h b/drivers/soc/visconti/uapi/ipa.h new file mode 100644 index 000000000..f3a066648 --- /dev/null +++ b/drivers/soc/visconti/uapi/ipa.h @@ -0,0 +1,87 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * (C) Copyright 2020 Toshiba Electronic Devices & Storage Corporation + */ + +#ifndef _UAPI_LINUX_IPA_H +#define _UAPI_LINUX_IPA_H + +/** + * enum drv_ipa_state - state of Visconti IPA driver + * + * @DRV_IPA_STATE_IDLE: driver is idle + * @DRV_IPA_STATE_BUSY: device is busy + */ +enum drv_ipa_state { DRV_IPA_STATE_IDLE = 0, DRV_IPA_STATE_BUSY }; + +/** + * enum drv_ipa_buffer_direction - usage of buffer + * + * @DRV_IPA_DIR_BIDIRECTION: cpu writes/reads data + * @DRV_IPA_DIR_TO_DEVICE: cpu writes data + * @DRV_IPA_DIR_FROM_DEVICE: cpu reads data + * @DRV_IPA_DIR_NONE: cpu not access or non-coherent + */ +enum drv_ipa_buffer_direction { + DRV_IPA_DIR_BIDIRECTION = 0, + DRV_IPA_DIR_TO_DEVICE, + DRV_IPA_DIR_FROM_DEVICE, + DRV_IPA_DIR_NONE +}; + +/** + * struct drv_ipa_buffer_info - buffer information for Visconti IPA drivers + * + * @fd: file descriptor of Ion allocated heap + * @coherent: allocated via coherent bus or not + * @direction: buffer direction (to/from device) + * + * note: When the Ion heap is allocated wit ION_FLAG_CACHED, + * &struct drv_ipa_buffer_info.coherent should be true. + * Else, it should be false. + */ +struct drv_ipa_buffer_info { + uint32_t fd; + bool coherent; + enum drv_ipa_buffer_direction direction; +}; + +/** + * struct drv_ipa_addr - address structure for Visconti IPA drivers + * + * @buffer_index: array index of &struct drv_ipa_buffer_info + * @offset: offset from the top of Ion heap + */ +struct drv_ipa_addr { + uint32_t buffer_index : 4; + uint32_t offset : 28; +}; + +#define IPA_BUFFER_INDEX_MAX (16) +#define IPA_INVALID_ADDR \ + { \ + .buffer_index = 0xfu, .offset = 0xfffffffu \ + } + +static inline struct drv_ipa_addr drv_ipa_invalid_addr(void) +{ + struct drv_ipa_addr invalid_addr = IPA_INVALID_ADDR; + return invalid_addr; +} + +static inline bool drv_ipa_is_invalid_addr(struct drv_ipa_addr addr) +{ + struct drv_ipa_addr invalid_addr = IPA_INVALID_ADDR; + + if ((addr.buffer_index == invalid_addr.buffer_index) && + (addr.offset == invalid_addr.offset)) { + return true; + } + return false; +} + +#define IOC_IPA_MAGIC 'I' +#define IOC_IPA_START _IO(IOC_IPA_MAGIC, 0) +#define IOC_IPA_GET_STATUS _IO(IOC_IPA_MAGIC, 1) + +#endif /* _UAPI_LINUX_IPA_H */